Adjuvant Second-Dose Chemotherapy before Surgery for Patients with Locally Advanced Rectal Malignancy Is Not Beneficial: A Systematic Review and Meta-Analysis
Joint Authors
Chen, Min
Song, Xue
Chen, Liang-zhou
Xu, Lin
Lu, Yi-pu
Zhang, Jin-song
Source
Gastroenterology Research and Practice
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-08-01
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Background.
Preoperative chemoradiotherapy is the standard treatment for patients with locally advanced rectal cancer, although tumor responses vary widely; some patients may achieve a pathologic complete response rate (pCR) after chemoradiotherapy.
Controversy exists with regard to the efficacy of different preoperative combination chemotherapy regimens and neoadjuvant chemoradiotherapy, compared with chemoradiotherapy alone.
Methods.
PubMed, the Cochrane Library, and Embase databases were searched for comparative studies of patients with locally advanced rectal cancer that were published between January 1991 and January 2016.
Efficacies of different preoperative combination chemotherapy regimens and neoadjuvant chemoradiotherapy (group A) were compared with chemoradiotherapy alone (group B) in a meta-analysis using Review Manager v5.2.
Results.
Three prospective randomized controlled trials and two prospective nonrandomized controlled trials comprising 444 cases were eligible for analysis.
No significant difference was detected in the rate of pCR (50/223, 22.4% versus 35/223, 15.7%; relative risk, RR: 1.42 [95% confidence interval, CI: 0.97–2.09], p=0.07) between the two groups.
The rate of tumor regression was similar for both groups (122/203, 60.1% versus 111/203, 54.7%; RR: 1.11 [95% CI: 0.94–1.29], p=0.22).
Conclusions.
Adjuvant chemotherapy with preoperative chemoradiotherapy did not significantly improve the rate of pCR nor the rate of T and N downstaging.
American Psychological Association (APA)
Chen, Min& Song, Xue& Chen, Liang-zhou& Xu, Lin& Lu, Yi-pu& Zhang, Jin-song. 2017. Adjuvant Second-Dose Chemotherapy before Surgery for Patients with Locally Advanced Rectal Malignancy Is Not Beneficial: A Systematic Review and Meta-Analysis. Gastroenterology Research and Practice،Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1156132
Modern Language Association (MLA)
Chen, Min…[et al.]. Adjuvant Second-Dose Chemotherapy before Surgery for Patients with Locally Advanced Rectal Malignancy Is Not Beneficial: A Systematic Review and Meta-Analysis. Gastroenterology Research and Practice No. 2017 (2017), pp.1-8.
https://search.emarefa.net/detail/BIM-1156132
American Medical Association (AMA)
Chen, Min& Song, Xue& Chen, Liang-zhou& Xu, Lin& Lu, Yi-pu& Zhang, Jin-song. Adjuvant Second-Dose Chemotherapy before Surgery for Patients with Locally Advanced Rectal Malignancy Is Not Beneficial: A Systematic Review and Meta-Analysis. Gastroenterology Research and Practice. 2017. Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1156132
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1156132